Territory



(No Model.)

W. H. FRAZER. GAP FOR FUSES.

No. 408,096. Patented July so, 1889.

0&31

Wl'blessea"; jiwmzar UNITED, STATES ATENT QFFIGE.

WILLIAM H. FRAZER, OF MULLAN, IDAHO TERRITORY, ASSIGN OR OF ONE HALF TOJOHN MULLAN, OF WASHINGTON, DISTRICT OF COLUMBIA.

CAP FOR FUSES.

SPECIFICATION formingpart of Letters Patent No. 408,096, dated July 30,1889.

. Application filed April 1, 1889- Serial No. 305,549. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM H. FRAZER,

pf Mullan, in the county of Shoshone and Ter- It has been a commonpractice to fasten a' metal cap to the fuse by compressing the body ofthe cap with pinchers, the point of a knife, or the teeth of theoperator, whiehhas often been the means of causing the shell to explodeand injure the person handling it.

My invention is designed to obviate this danger. v

In the accompanying drawings, Figure 1 is a perspective view of the capattached to a fuse, and Fig. 2 is a longitudinal section of Fig. 1.

Like letters of reference indicate like parts in both figures. i

A is the fuse, and B the cap. The cap is made of rubber, its wall beingabout one-sixteenth of an inch thick and its interior diameter slightlygreater than the diameter of the fuse to which it is intended to beapplied. The outer surface of the cap is unbroken; but on the innersurface of the wall, near the open end of the cap, two raised rings b bare formed. These rings project about one thirtysecond of an inch fromthe main interior surface, and when the fuse is inserted a dead-airchamber b will be formed. This dead-air 4o chamber serves effectually toprevent, any water reaching the explosive material, which will occupynearly one-half of the interior of the cap.

In manufacturing the cap will be molded 5 and vulcanized to give it asufficient degree of hardness without destroying its flexibility. Toapply the cap to the fuse, it is simply necessary to push it on, whenthe interior rings will bind upon the fuse and retain the cap 50securely in position.

Having described my invention, I claim- 1. A flexible fuse-cap made ofrubber and provided on its interior surface with raised annularportions, substantially as specified.

2. A-flexible fuse-cap made of rubber and having its outer surfaceunbroken or straight, and being provided on its interior surface withraised annular portions, substantially as specified.

3.- The combination, with a fuse, of a flexible cap fitting over saidfuse, the cap being made of rubber and provided on its interiorv surfacewith raised annular portions, whereby a dead-air chamber is formed inthe interior of the cap between the raised annular portions,substantially as and for the purpose specified.

In testimony whereof I have hereunto set my hand and seal.

WILLIAM H. FRAZER. [L.'S.]

Witnesses:

G. F. GREEN, LJW. GAY.

